First thing you will need is an mod called Super Duper Macro ( )
This allows for unlimited space in your macros for the HUGE ASCII macros "IE: face palm"
The mod its self is very simple all you need to do is go NEW put a name for the macro then add the ASCII text, click save then click get link to place it on your action bar
Its very simple I don't think i can explain it any better then that.
OK here is some of my collection of ASCII macros for wow.
My collection (text file small)
Go with whatever file upload provider you prefer,
If you would like to make your own either GOOGLE "ascii art" or try www.chris.com/ASCII
THE WORD ***** (I Didn't make this one)
MICKEY MOUSE YOU FAIL MACRO
NAKED LADY MACRO
TWEETY BIRD MACRO
VERY HUGE DINOSAUR WITH A HAT MACRO
MIDDLE FINGER MACRO
Hope you enjoy these
only constructive criticism any flaming will be ignored, because i know what all you e-thugs like to do 6):
Also feel free to send me any of your ascii macros that you come across.